| commit | 84850e8d8a5ec7b9d3c47d224e9a10c9da52ff1b | [log] [tgz] |
|---|---|---|
| author | Yan, Zheng <zheng.z.yan@intel.com> | Mon Aug 29 09:25:53 2011 +0800 |
| committer | David Sterba <dsterba@suse.cz> | Thu Oct 20 18:10:31 2011 +0200 |
| tree | 799dd9e0b150361dc2a5cdf3772a0ce8395d5f06 | |
| parent | 016fc6a63e465d5b94e4028f6d05d9703e195428 [diff] |
btrfs: check file extent backref offset underflow Offset field in data extent backref can underflow if clone range ioctl is used. We can reliably detect the underflow because max file size is limited to 2^63 and max data extent size is limited by block group size. Signed-off-by: Zheng Yan <zheng.z.yan@intel.com>